Fix:
arch/mips/kernel/signal.c: In function 'handle_signal':
arch/mips/kernel/signal.c:533:21: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
unsigned int tmp = (unsigned int)current->mm->context.vdso;
^
arch/mips/kernel/signal.c:536:9: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
vdso = (void *)tmp;
^
cc1: all warnings being treated as errors
when building a 64-bit kernel.
This is not really a supported configuration, but the cast is wrong
either way, Linux makes the assumption that sizeof(void *) equals
sizeof(unsigned long) and therefore the latter type is expected to be
used where integer operations have to be applied to pointers for some
reason.
Signed-off-by: Maciej W. Rozycki <macro@xxxxxxxxxxxxxxxx>
---
linux-umips-pointer-size.diff
Index: linux-3.17-stable-malta64/arch/mips/kernel/signal.c
===================================================================
--- linux-3.17-stable-malta64.orig/arch/mips/kernel/signal.c 2014-11-14 04:06:50.000000000 +0000
+++ linux-3.17-stable-malta64/arch/mips/kernel/signal.c 2014-11-14 16:55:05.891621120 +0000
@@ -530,7 +530,7 @@ static void handle_signal(struct ksignal
struct mips_abi *abi = current->thread.abi;
#ifdef CONFIG_CPU_MICROMIPS
void *vdso;
- unsigned int tmp = (unsigned int)current->mm->context.vdso;
+ unsigned long tmp = (unsigned long)current->mm->context.vdso;
set_isa16_mode(tmp);
vdso = (void *)tmp;
